# Chemical Reaction and Equation Class 10 MCQ

In this article we will see 50 Chemical Reaction and Equation Class 10 MCQ. Chemical Reaction and Equation is a topic that explains the process of chemical reactions and the chemical equations that represent them. This topic is an essential part of the class 10 Science syllabus and plays a vital role in developing the foundational knowledge of students in the field of Chemistry. To help students understand the concept of Chemical Reaction and Equation, various MCQs (Multiple Choice Questions) are available.

Also Read Class 10th SST Notes

## Chemical Reaction and Equation Class 10 MCQ with Solutions

MCQs are a type of objective questions that allow students to choose the correct answer from a set of options. They are an effective way to test students’ understanding of a particular concept and improve their analytical and problem-solving skills. In this article, we will discuss some of the important Chemical Reaction and Equation Class 10 MCQs that will help students prepare for their exams. Also read Class 10 Science Notes

1. The reaction between magnesium and hydrochloric acid is represented by the equation:
Mg + 2HCl → MgCl2 + H2
What is the balanced chemical equation for this reaction?
A) Mg + HCl → MgCl + H
B) Mg + 2HCl → MgCl2 + H2
C) Mg + 2HCl → MgHCl + H2
D) Mg + HCl → MgCl2 + 2H2
Solution: The balanced equation for the reaction between magnesium and hydrochloric acid is Mg + 2HCl → MgCl2 + H2. This equation is balanced because there are the same number of atoms of each element on both sides of the equation.
2. The reaction between iron and oxygen to form iron oxide is represented by the equation:
4Fe + 3O2 → 2Fe2O3
What is the coefficient of oxygen in the balanced chemical equation?
A) 3
B) 4
C) 2
D) 6
Solution: The balanced chemical equation for the reaction between iron and oxygen is 4Fe + 3O2 → 2Fe2O3. The coefficient of oxygen in the balanced equation is 3.
3. The reaction between copper oxide and hydrochloric acid is represented by the equation:
CuO + 2HCl → CuCl2 + H2O
What is the balanced chemical equation for this reaction?
A) CuO + HCl → CuCl + H2O
B) CuO + 2HCl → CuCl2 + H2O
C) CuO + HCl → CuCl2 + H2
D) CuO + 2HCl → CuHCl + H2O
Solution: The balanced chemical equation for the reaction between copper oxide and hydrochloric acid is CuO + 2HCl → CuCl2 + H2O. This equation is balanced because there are the same number of atoms of each element on both sides of the equation.
4. The reaction between sodium chloride and silver nitrate is represented by the equation:
NaCl + AgNO3 → AgCl + NaNO3
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Double displacement reaction
Solution: The reaction between sodium chloride and silver nitrate is a double displacement reaction, where the ions in the reactants exchange places to form new compounds.
5. The reaction between calcium carbonate and hydrochloric acid is represented by the equation:
CaCO3 + 2HCl → CaCl2 + CO2 + H2O
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Double displacement reaction
Solution: The reaction between calcium carbonate and hydrochloric acid is a decomposition reaction, where a compound breaks down into its constituent elements or simpler compounds.
6. The reaction between zinc and sulfuric acid is represented by the equation:
Zn + H2SO4 → ZnSO4 + H2
What is the coefficient of zinc in the balanced chemical equation?
A) 1
B) 2
C) 3
D) 4
Solution: The balanced chemical equation for the reaction between zinc and sulfuric acid is Zn + H2SO4 → ZnSO4 + H2. The coefficient of zinc in the balanced equation is 1.
7. The reaction between potassium permanganate and hydrogen peroxide is represented by the equation:
2KMnO4 + 5H2O2 → 2KOH + 2MnO2 + 5O2 + 2H2O
What type of reaction is this?

A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Redox reaction
Solution: The reaction between potassium permanganate and hydrogen peroxide is a redox reaction, where there is a transfer of electrons between the reactants.
1. The reaction between sulfur and oxygen to form sulfur dioxide is represented by the equation:
S + O2 → SO2
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Redox reaction

Solution: The reaction between sulfur and oxygen is a combination reaction, where two or more substances combine to form a single product.
1. The reaction between aluminum and hydrochloric acid is represented by the equation:
2Al + 6HCl → 2AlCl3 + 3H2
What is the coefficient of hydrochloric acid in the balanced chemical equation?
A) 2
B) 3
C) 4
D) 6
Solution: The balanced chemical equation for the reaction between aluminum and hydrochloric acid is 2Al + 6HCl → 2AlCl3 + 3H2. The coefficient of hydrochloric acid in the balanced equation is 6/2 = 3.
1. The reaction between barium chloride and sulfuric acid is represented by the equation:
BaCl2 + H2SO4 → BaSO4 + 2HCl
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Double displacement reaction

Solution: The reaction between barium chloride and sulfuric acid is a double displacement reaction, where the ions in the reactants exchange places to form new compounds.More Chemical Reaction and Equation Class 10 MCQ:
2. The reaction between calcium oxide and water is represented by the equation:
CaO + H2O → Ca(OH)2
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Redox reaction
Solution: The reaction between calcium oxide and water is a combination reaction, where two or more substances combine to form a single product.
3. The reaction between sodium chloride and silver nitrate is represented by the equation:
NaCl + AgNO3 → NaNO3 + AgCl
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Double displacement reaction
Solution: The reaction between sodium chloride and silver nitrate is a double displacement reaction, where the ions in the reactants exchange places to form new compounds.
4. The reaction between zinc and sulfuric acid is represented by the equation:
Zn + H2SO4 → ZnSO4 + H2
What is the coefficient of sulfuric acid in the balanced chemical equation?
A) 1
B) 2
C) 3
D) 4
Solution: The balanced chemical equation for the reaction between zinc and sulfuric acid is Zn + H2SO4 → ZnSO4 + H2. The coefficient of sulfuric acid in the balanced equation is 1, which is already balanced.
5. The reaction between iron and chlorine gas is represented by the equation:
Fe + Cl2 → FeCl3
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Redox reaction
Solution: The reaction between iron and chlorine gas is a displacement reaction, where one element in a compound is replaced by another element.
6. The reaction between methane and oxygen is represented by the equation:
CH4 + 2O2 → CO2 + 2H2O
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Redox reaction
Solution: The reaction between methane and oxygen is a redox reaction, where there is a transfer of electrons between the reactants.
7. The reaction between lead nitrate and potassium iodide is represented by the equation:
Pb(NO3)2 + 2KI → PbI2 + 2KNO3
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Double displacement reaction
Solution: The reaction between lead nitrate and potassium iodide is a double displacement reaction, where the ions in the reactants exchange places to form new compounds.
8. The reaction between magnesium and hydrochloric acid is represented by the equation:
Mg + 2HCl → MgCl2 + H2
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Redox reaction
Solution: The reaction between magnesium and hydrochloric acid is a redox reaction, where there is a transfer of electrons between the reactants.
9. The reaction between copper oxide and sulfuric acid is represented by the equation:
CuO + H2SO4 → CuSO4 + H2O
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Redox reaction
Solution: The reaction between copper oxide and sulfuric acid is a combination reaction, where two or more substances combine to form a single product.
10. The reaction between sodium hydrogen carbonate and acetic acid is represented by the equation:
NaHCO3 + CH3COOH → CH3COONa + CO2 + H2O
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Acid-base reaction
Solution: The reaction between sodium hydrogen carbonate and acetic acid is an acid-base reaction, where an acid reacts with a base to form a salt and water.
11. The reaction between aluminum and oxygen to form aluminum oxide is represented by the equation:
4Al + 3O2 → 2Al2O3
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Redox reaction
Solution: The reaction between aluminum and oxygen is a redox reaction, where there is a transfer of electrons between the reactants.More Chemical Reaction and Equation Class 10 MCQ:
12. The reaction between sodium and water is represented by the equation:
2Na + 2H2O → 2NaOH + H2
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Redox reaction
Solution: The reaction between sodium and water is a displacement reaction, where one element in a compound is replaced by another element.
13. The reaction between barium chloride and sulfuric acid is represented by the equation:
BaCl2 + H2SO4 → BaSO4 + 2HCl
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Double displacement reaction
Solution: The reaction between barium chloride and sulfuric acid is a double displacement reaction, where the ions in the reactants exchange places to form new compounds.
14. The reaction between zinc and hydrochloric acid is represented by the equation:
Zn + 2HCl → ZnCl2 + H2
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Redox reaction
Solution: The reaction between zinc and hydrochloric acid is a redox reaction, where there is a transfer of electrons between the reactants.
15. The reaction between iron and oxygen to form iron oxide is represented by the equation:
4Fe + 3O2 → 2Fe2O3
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Redox reaction
Solution: The reaction between iron and oxygen is a redox reaction, where there is a transfer of electrons between the reactants.
16. The reaction between carbon and oxygen to form carbon dioxide is represented by the equation:
C + O2 → CO2
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Redox reaction
Solution: The reaction between carbon and oxygen is a redox reaction, where there is a transfer of electrons between the reactants.
17. The reaction between calcium carbonate and hydrochloric acid is represented by the equation:
CaCO3 + 2HCl → CaCl2 + CO2 + H2O
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Acid-base reaction
Solution: The reaction between calcium carbonate and hydrochloric acid is an acid-base reaction, where an acid reacts with a base to form a salt and water.
18. The reaction between magnesium oxide and sulfuric acid is represented by the equation:
MgO + H2SO4 → MgSO4 + H2O
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Double displacement reaction
Solution: The reaction between magnesium oxide and sulfuric acid is a double displacement reaction, where the ions in the reactants exchange places to form new compounds.
19. The reaction between zinc and sulfuric acid is represented by the equation:
Zn + H2SO4 → ZnSO4 + H2
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Redox reaction
Solution: The reaction between zinc and sulfuric acid is a redox reaction, where there is a transfer of electrons between the reactants.
20. The reaction between sodium chloride and silver nitrate is represented by the equation:
NaCl + AgNO3 → AgCl + NaNO3
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Double displacement reaction
Solution: The reaction between sodium chloride and silver nitrate is a double displacement reaction, where the ions in the reactants exchange places to form new compounds.
21. The reaction between iron and hydrochloric acid is represented by the equation:
Fe + 2HCl → FeCl2 + H2
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Redox reaction
Solution: The reaction between iron and hydrochloric acid is a redox reaction, where there is a transfer of electrons between the reactants.More Chemical Reaction and Equation Class 10 MCQ:
22. The reaction between copper sulfate and zinc is represented by the equation:
CuSO4 + Zn → ZnSO4 + Cu
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Redox reaction
Solution: The reaction between copper sulfate and zinc is a displacement reaction, where one element in a compound is replaced by another element.
23. The reaction between methane and oxygen is represented by the equation:
CH4 + 2O2 → CO2 + 2H2O
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Redox reaction
Solution: The reaction between methane and oxygen is a redox reaction, where there is a transfer of electrons between the reactants.
24. The reaction between hydrochloric acid and sodium hydroxide is represented by the equation:
HCl + NaOH → NaCl + H2O
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Acid-base reaction
Solution: The reaction between hydrochloric acid and sodium hydroxide is an acid-base reaction, where an acid reacts with a base to form a salt and water.
25. The reaction between lead nitrate and potassium iodide is represented by the equation:
Pb(NO3)2 + 2KI → PbI2 + 2KNO3
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Double displacement reaction
Solution: The reaction between lead nitrate and potassium iodide is a double displacement reaction, where the ions in the reactants exchange places to form new compounds.
26. The reaction between aluminum and hydrochloric acid is represented by the equation:
2Al + 6HCl → 2AlCl3 + 3H2
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Redox reaction
Solution: The reaction between aluminum and hydrochloric acid is a redox reaction, where there is a transfer of electrons between the reactants.
27. The reaction between sodium carbonate and hydrochloric acid is represented by the equation:
Na2CO3 + 2HCl → 2NaCl + CO2 + H2O
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Acid-base reaction
Solution: The reaction between sodium carbonate and hydrochloric acid is an acid-base reaction, where an acid reacts with a base to form a salt and water.
28. The reaction between magnesium and oxygen is represented by the equation:
2Mg + O2 → 2MgO
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Redox reaction
Solution: The reaction between magnesium and oxygen is a redox reaction, where there is a transfer of electrons between the reactants.
29. The reaction between sulfur dioxide and water is represented by the equation:
SO2 + H2O → H2SO3
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Acid-base reaction
Solution: The reaction between sulfur dioxide and water is an acid-base reaction, where an acid reacts with a base to form a salt and water.
30. The reaction between iron and sulfur is represented by the equation:
Fe + S → FeS
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Redox reaction
Solution: The reaction between iron and sulfur is a combination reaction, where two elements combine to form a compound.
31. The reaction between copper and nitric acid is represented by the equation:
3Cu + 8HNO3 → 3Cu(NO3)2 + 2NO + 4H2O
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Redox reaction
Solution: The reaction between copper and nitric acid is a redox reaction, where there is a transfer of electrons between the reactants.More Chemical Reaction and Equation Class 10 MCQ:
32. The reaction between sodium and water is represented by the equation:
2Na + 2H2O → 2NaOH + H2
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Redox reaction
Solution: The reaction between sodium and water is a displacement reaction, where the sodium displaces hydrogen from water to form sodium hydroxide and hydrogen gas.
33. The reaction between barium chloride and sodium sulfate is represented by the equation:
BaCl2 + Na2SO4 → 2NaCl + BaSO4
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Double displacement reaction
Solution: The reaction between barium chloride and sodium sulfate is a double displacement reaction, where the ions in the reactants exchange places to form new compounds.
34. The reaction between carbon dioxide and water is represented by the equation:
CO2 + H2O → H2CO3
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Acid-base reaction
Solution: The reaction between carbon dioxide and water is an acid-base reaction, where carbon dioxide (a weak acid) reacts with water (a weak base) to form carbonic acid.
35. The reaction between sodium hydroxide and hydrochloric acid is represented by the equation:
NaOH + HCl → NaCl + H2O
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Acid-base reaction
Solution: The reaction between sodium hydroxide and hydrochloric acid is an acid-base reaction, where an acid reacts with a base to form a salt and water.
36. The reaction between potassium permanganate and sulfuric acid is represented by the equation:
2KMnO4 + 3H2SO4 → K2SO4 + 2MnSO4 + 3H2O + 5O2
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Redox reaction
Solution: The reaction between potassium permanganate and sulfuric acid is a redox reaction, where there is a transfer of electrons between the reactants.
37. The reaction between calcium oxide and water is represented by the equation:
CaO + H2O → Ca(OH)2
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Acid-base reaction
Solution: The reaction between calcium oxide and water is an acid-base reaction, where calcium oxide (a base) reacts with water (an acid) to form calcium hydroxide.
38. The reaction between silver nitrate and sodium chloride is represented by the equation:
AgNO3 + NaCl → AgCl + NaNO3
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Double displacement reaction
Solution: The reaction between silver nitrate and sodium chloride is a double displacement reaction, where the ions in the reactants exchange places to form new compounds.
39. The reaction between zinc and hydrochloric acid is represented by the equation:
Zn + 2HCl → ZnCl2 + H2
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Redox reaction
Solution: The reaction between zinc and hydrochloric acid is a redox reaction, where there is a transfer of electrons between the reactants.
40. The reaction between sulfuric acid and sodium hydroxide is represented by the equation:
H2SO4 + 2NaOH → Na2SO4 + 2H2O
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Acid-base reaction
Solution: The reaction between sulfuric acid and sodium hydroxide is an acid-base reaction, where an acid reacts with a base to form a salt and water.
41. The reaction between copper and sulfuric acid is represented by the equation:
Cu + 2H2SO4 → CuSO4 + 2H2O + SO2
What type of reaction is this?
A) Combination reaction
B) Decomposition reaction
C) Displacement reaction
D) Redox reaction